.Tost{
    font-size: 14px;
    color: #fff;
    background-color: rgba(0, 0, 0, 0.8);
    padding: 5px 10px;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50% -50%);
    z-index: 333;
    animation: showTOst 0.5s forwards;
}
@keyframes showTOst{
    0%{opacity: 0;}
    100%{opacity: 1;}
}
@keyframes hiddenTOst{
    0%{opacity:1;}
    100%{opacity: 0;}
}